EP 0122491 A1 19841024 - Digital phase detector.
Title (en)
Digital phase detector.
Title (de)
Digitaler Phasendetektor.
Title (fr)
Détecteur de phase numérique.
Publication
Application
Priority
DE 3310581 A 19830323
Abstract (en)
1. A digital phase detector which serves to determine the phase deviation between two pulses (A, B), one (A) of which is coupled to a clock frequency fT and the other (B) of which is independent of the clock frequency fT , characterized in that an A/D-converter, which is supplied with that pulse (B) which is not coupled to the clock frequency fT is connected at its output to a multiplier (M) which has switch-over facilities and which multiplies the output signal from the A/D-converter by the multiplier factors +1 or -1, that the switch-over of the multiplier factor of the multiplier (M) is implemented by the pulse (A) which is coupled to the clock frequency fT , and that the multiplier (M) is connected at its output to a digital integrator (I) which is supplied with the output signal from the multiplier (M) and from the output of which the phase deviation (DIAM) is obtained by sampling.
Abstract (de)
Bei einem digitalen Phasendetektor wird ein Impuls (B), der unabhängig von der Taktfrequenz fT ist, einem Tiefpaß (TP) zugeführt und gelangt dann an den Eingang eines A/D-Wandlers. Die Ausgangssignale des A/D-Wandlers werden einem Multiplizierer (M) zugeführt, der mit einem mit der Taktfreguenz fT verkoppelten Impuls (A) zwischen den Koeffizienten + 1 oder -1 umgeschaltet wird. Das Ausgangssignal des Multiplizierers (M) wird einem digitalen Integrator (I) zugeführt, an dessen Ausgang die Phasenabweichung (φ) zwischen den beiden Impulsen (A, B) durch Abtastung mit der Frequenz fA gewonnen wird.
IPC 1-7
IPC 8 full level
G01R 25/00 (2006.01); G01R 25/08 (2006.01); H03D 13/00 (2006.01); H04N 3/16 (2006.01)
CPC (source: EP)
G01R 25/08 (2013.01)
Citation (search report)
- [A] DE 2258383 A1 19730628 - IBM
- [A] AT 312069 B 19731210 - RCA CORP
- [A] ELECTRO/80 CONFERENCE RECORD, Band 5, Mai 13-15, 1980, Boston, USA J. SILVERMAN "Applications of multiplier/detector ICs in analog communication systems", Seiten 1-8
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0122491 A1 19841024; EP 0122491 B1 19870311; DE 3310581 A1 19840927; DE 3462629 D1 19870416; JP H0664097 B2 19940822; JP S59183380 A 19841018
DOCDB simple family (application)
EP 84103011 A 19840319; DE 3310581 A 19830323; DE 3462629 T 19840319; JP 5412984 A 19840321